Gerard collingwood clark



(No Model.)

G.-G..OL AB,K. BOTTLE STOPPEL Patented Jan. 6, 1891.

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MOM

r UNITED STATES PATENT OFFICE.

GERARD COLLINGWOOD CLARK, OF LONDON, ENGLAND.

BOTTLE-STOPPER.

SPECIFICATION forming part of Letters Patent No. 444,200, dated January 6, 1891.

Application filed March 1, 1890. Serial No. 342,263. (No model.)

To all whom it may concern.-

Be it known that I, GERARD COLLINGWOOD CLARK, manufacturer, a subject of the Queen of Great Britain, residing at London, England, have invented new and useful Improvements in Stoppers for Bottles, Jars, and the Like, of which the following is a specification.

This invention relates chiefly to improvements in that class of stoppers which are made of a stem or body of suitable hard material, such as wood, glass, or porcelain, and a covering of elasticmaterial-such as corkover that part of the stopper which 'fits into the mouth of the bottle or jar to be stoppered.

In carrying out my invention I make the stem of the stopper preferably taper in form and with a groove near the lower end thereof. Over this stem I pass a ring or cylinder of cork or other suitable elastic material, which will take into the groove in the stem and will be firmly held on the stopper without necessitating the use of cement.

For the purpose of enabling stoppers having a stem of hard material with a ring or cylinder of elastic material thereon to be withdrawn from the bottles or jars to which they are applied in a simple and expeditious manner, I find it advantageous to cut the stem or body of the stopper with ascrew-thread or its equivalent adapted to receive a screwthreaded ring or cap. By this arrangement the stopper, having been forced into the mouth of the bottle so as to close the same in the usual manner, can be easily withdrawn from the bottle by screwing on the said screwthreaded ring or cap, the turning of the under edge of which against the top of the mouth of the bottle will raise the stopper in the neck so as to allow it to be withdrawn. In some cases the screw-threaded ring or cap may be provided with a recess for the purpose of receiving a suitable packing.

In order to enable myinvention to be fully understood, I will describe how it can be carried into practice by reference to the accompanying drawings.

Figure 1 is an elevation of a stopper made according to my invention; Fig. 2, a section of a threaded ring for the same; Fig. 3,a sectional view showing their application to a bottle-neck, and Figs. 4, 4*, and 5 variations in the stopper to adapt it to a bottle-month of different form.

In the figures, a is the stem of the stopper, made of wood, glass, porcelain, or other suitable hard material, and taper in form, as shown.

I) is the groove near the lower end of the stem at, and c is the cylinder, of cork or other suitable elastic material, which is passed or sprung over the stem at so that the lower portion of the cylinder 0 will take into the groove 12, as clearly shown in Fig. 4, whereby the elastic cylinder will be firmly held on the stem a without necessitating the use of cement.

In some cases the lower end (1 of the stem at of the stopper may be made of larger diameter than the diameter of the lower taper part of the stem, whereby all risk of the cylinder sliding oif the stem would be avoided.

Fig. l is an elevation illustrating the stopper provided with a screw-thread designed to engage with and to be operated upon by av screw-threaded ring according to my invention, and Fig. 2 is a section of the screwthreaded ring to be used in connection therewith. Fig. 3 is a vertical section of the neck of a bottle, showing the stopper and ring applied thereto. V e is the screw-thread, cut on the stem or body a of the stopper at the upper partthereof which projects above the mouth f of the bottle.

0 is the ring or cylinder, of cork or other suitable elastic material,on the stem (1. of the stopper.

g is the screw-thread of the ring it, which screw-thread is in this example a female thread, to adapt the ring to be screwed over the male screw 6 on the stopper.

It will be obvious that if the ring 71. be screwed over the stopper it will, as soon as it meets the top of the bottle-mouth, as shown in Fig. 6, commence to raise the stopper in the bottle-neck, so as to allow it tobe withdrawn.

Fig. 4- is an elevation of a stopper adapted to be used with a bottle havinga mouth shaped substantially as shown in vertical section at Fig. 5, where it is necessary that the stopper should resistgreat internal pressure. In this arrangement the stem a need not taper, and

the internal portion of the mouth of the bottle is made narrowest in diameter at the poiu t i and widest at the top of the mouth and below the point '2', thus giving it a double. taper approximately like the form of an hour-glass. 'lhe stopper is easily forced into the position shown at Fig. 5, where it is securely held by the special shape of mouth there shown. I would point out that for this special shape of mouth the stopper maybe l1lllCllSllOltOl,lf so preferred, it only being necessary in such case to bring the smallest diameter of the mouth-that is, the point 1'nearer to the top of the bottle-month.

l'liaving now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I. declare that what I claim is l. A bottle-stopper made of one piece of hard material, having a serew'threaded head and having its stem or body which enters the bottle-neck covered with a ring of elastic material and provided with a scrmv-threaded cap or ri ng adapted to engage with such head, whereby the screwing down of such ring or cap against the top of the bottle-mouth serves to raise and loosen the stopper.

2. A bottle-stopper having a screw-head e and the stem a, all in one piece, this head having the larger diameter, and which is greater than that of the mouth of the bottle, and the stem having a diameter less than that of such month and having an annular groove 1) near its bottom, and provided with an elastic tube 0, sprung on such stem, and whose lower end only enters such groove, all substantially as set forth.

G llllil lll) OOLLI NGWOOI) (,LA lllt'.

Witnesses:

G..F. REDFERN, JOHN E. BOUSFIELI), Of the firm of G. F. Redfe'rn d1" 00., 4.- South Street, Finsbury, London, Patent Agents. 

